초록 ▼

A method is disclosed for recovering and reclaiming heat from a source of relatively hot gases, which are preferably substantially vapor-saturated, by directly contacting the gases with a relatively cooler spray of liquid, such as water, in a heat exchange zone. The relatively warm liquid resulting

A method is disclosed for recovering and reclaiming heat from a source of relatively hot gases, which are preferably substantially vapor-saturated, by directly contacting the gases with a relatively cooler spray of liquid, such as water, in a heat exchange zone. The relatively warm liquid resulting from the contact of the sprayed cooler liquid with the vapor-saturated gases are collected in a receiver zone in the heat exchanger. This relatively warm liquid is then available for use. The hot gases which entered the heat exchanger will exit at a cooler temperature. They may be released to the atmosphere or returned to a process or room. The method is particularly suited for recovering heat from steam system condensate vents, dye fixation steamer exhausts, boiler exhaust stacks, and dry can enclosures such as those used in the textile and paper industry.

대표청구항 ▼

In a process which includes the steps of: providing a plurality of dry cans in a drying process from which vapor-saturated gas at a first elevated temperature emanates, the improvement comprising the procedural combination of steps of: containing said emanating vapor-saturated gas and directing said

In a process which includes the steps of: providing a plurality of dry cans in a drying process from which vapor-saturated gas at a first elevated temperature emanates, the improvement comprising the procedural combination of steps of: containing said emanating vapor-saturated gas and directing said gas to an upstanding heat exchanger comprising a means for receiving said contained gas; directly contacting said vapor saturated gas in a heat exchange zone within said heat exchanger with a relatively cooler spray of liquid, said contacting step occurring as the result of a plurality of spray heads located along a substantial length of said heat exchange zone for dispersing significant amounts of said relatively cooler liquid substantially throughout the direct contact heat exchange zone in said heat exchanger, the dispersing step providing a plurality of liquid phase droplets from a plurality of spray heads in said heat exchange zone to form a repetitive plurality of liquid phase barriers for intimate contact with said substantially saturated vapor within said heat exchange zone; collecting relatively warm liquid resulting both from the agglomeration of sprayed relatively cool liquid and condensing of at least a portion of the saturated vapor to a receiver zone of said heat exchanger; exhausting a gas from the heat exchanger which is relatively cool compared to the substantially saturated inlet gas; and returning the gas exhausted from the heat exchanger to said dry cans as a supplemental source of make-up gas.